The Paper Machine Forming fabric (triple layer) is designed based on the upper, middle and bottom three layers. The upper layer adopts the meridian, weft and plain weave structure with a smaller diameter. It improves the retention rate of fine fiber and filler, improves the paper evenness and smoothness of the paper, and marks the web lightly and easily peel off. The bottom layer adopts the warp and weft of the thicker diameter to improve the stability and service life of the forming fabrics structure. In the middle layer, the two layers of the upper and bottom layers are tightly connected by a pair of weft lines, so that the upper and bottom that two layers do not produce relative rubbing and sliding. The Paper Machine Forming fabric has good quality, strong dehydration ability, high vertical and horizontal stiffness, good running stability and long service life. It has been widely applied to high speed paper machine.